PDCCH blind detection method, terminal and network side device

ABSTRACT

A PDCCH blind detection method, a terminal and a network side device are provided. The method includes: detecting, by a terminal, an energy saving signal in an energy saving signal window; blindly detecting, by the terminal, the PDCCH within a target time if the energy saving signal is detected, a distance between the target time and a position where the energy saving signal is detected is within a preset time distance range.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is the U.S. national phase of PCT ApplicationNo. PCT/CN2019/088941 filed on May 29, 2019, which claims a priority ofthe Chinese patent application No. 201810563484.9 filed on Jun. 4, 2018,the disclosures of which are incorporated herein by reference in theirentireties.

TECHNICAL FIELD

The present disclosure relates to the technical field of communicationtechnology, in particular to a Physical Downlink Control Channel (PDCCH)blind detection method, a terminal and a network side device.

BACKGROUND

In a 5G New Radio (NR) system, the working state of the UE may includean idle state (RRC_IDLE), an inactive state (RRC_Inactive), and aconnected state (RRC_Connected). In addition, at present, power savingis mainly achieved through the Discontinuous Reception (DRX) mechanism.The DRX cycle includes an activation time (On duration) cycle and a DRXsleep time (Opportunity for DRX) cycle. The UE only monitors the PDCCHduring the On duration cycle, and does not receive the PDCCH during theOpportunity for DRX cycle, so as to reduce power consumption. However,in the current communication system, the UE needs to blindly detect thePDCCH in each On duration cycle, which leads to relatively high powerconsumption of the UE.

SUMMARY

The present disclosure is to provide a PDCCH blind detection method, aUE and a network side device, so as to solve the problem of high powerconsumption of the UE.

In a first aspect, an embodiment of the present disclosure provides aPhysical Downlink Control Channel (PDCCH) blind detection method,includes: detecting, by a terminal, an energy saving signal in an energysaving signal window; blindly detecting, by the terminal, the PDCCHwithin a target time if the energy saving signal is detected, wherein adistance between the target time and a position where the energy savingsignal is detected is within a preset time distance range.

Optionally, the target time is an activation time of DiscontinuousReception (DRX); the activation time is configured by a network sidedevice, and the position where the energy saving signal is detected iswithin the activation time; or the activation time is an activation timeafter the position where the energy saving signal is detected among aplurality of activation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is the activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the terminal uses a low-power receiver to detect the energysaving signal at a candidate position of the energy saving signal; orthe terminal adopts a passive receiver to detect the energy savingsignal, wherein a position for detecting the energy saving signal atleast includes a position where the energy saving signal window islocated.

Optionally, time intervals between a plurality of candidate positionsincluded in the energy saving signal window are equal; or the candidatepositions in the energy saving signal window are determined according toprior information of an end for transmitting the energy saving signal;or the candidate positions in the energy saving signal window areconfigured on demand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location where the second signalsubset is located and the PDCCH is 0, or the interval between thelocation where the second signal subset is located and the PDCCH doesnot exceed a preset value.

Optionally, if the energy saving signal is detected, blindly detecting,by the terminal, the PDCCH within the activation time of DRX, includes:if the first signal subset is detected, waking up, by the terminal, areceiver of the terminal; if the second signal subset is detected,blindly detecting, by the terminal, the PDCCH within the activation timeof DRX.

Optionally, the terminal obtains configuration information of the energysaving signal window configured by the network side device in asemi-static, static or dynamic manner.

In a second aspect, a PDCCH monitoring method, includes: transmitting,by a network side device, an energy saving signal within an energysaving signal window, so that if the terminal has detected the energysaving signal, a PDCCH is blindly detected within a target time, whereina distance between the target time and a position where the energysaving signal is detected is within a preset time distance range.

Optionally, the target time is an activation time of DRX; the activationtime is configured by the network side device, and the position wherethe energy saving signal is detected is within the activation time; orthe activation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is the activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the network side device uses a low-power transmitter totransmit the energy saving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location where the second signalsubset is located and the PDCCH is 0, or the interval between thelocation where the second signal subset is located and the PDCCH doesnot exceed a preset value.

Optionally, the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static or dynamic manner.

In a third aspect, a terminal, includes: a detection module, configuredto detect an energy saving signal in an energy saving signal window; ablind detection module, configured to blindly detect the PDCCH within atarget time if the energy saving signal is detected, wherein a distancebetween the target time and a position where the energy saving signal isdetected is within a preset time distance range.

Optionally, the target time is an activation time of DRX; the activationtime is configured by a network side device, and the position where theenergy saving signal is detected is within the activation time; or theactivation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, time intervals between a plurality of candidate positionsincluded in the energy saving signal window are equal; or the candidatepositions in the energy saving signal window are determined according toprior information of an end for transmitting the energy saving signal;or the candidate positions in the energy saving signal window areconfigured on demand.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

In a fourth aspect, a network side device, includes: a transmittingmodule, configured to transmit an energy saving signal within an energysaving signal window, so that if the terminal has detected the energysaving signal, a PDCCH is blindly detected within a target time, whereina distance between the target time and a position where the energysaving signal is detected is within a preset time distance range.

Optionally, the target time is an activation time of DRX; the activationtime is configured by the network side device, and the position wherethe energy saving signal is detected is within the activation time; orthe activation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

In a fifth aspect, a terminal, includes: a transceiver, a memory, aprocessor, and a program stored in the memory and executed by theprocessor, wherein: the processor is configured to detect an energysaving signal in an energy saving signal window; and if the energysaving signal is detected, the PDCCH is blindly detected within a targettime, wherein a distance between the target time and a position wherethe energy saving signal is detected is within a preset time distancerange.

Optionally, the target time is an activation time of DRX; the activationtime is configured by a network side device, and the position where theenergy saving signal is detected is within the activation time; or theactivation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is the activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the processor uses a low-power receiver to detect the energysaving signal at a candidate position of the energy saving signal; orthe processor uses a passive receiver to detect the energy savingsignal, wherein a position for detecting the energy saving signal atleast includes a position where the energy saving signal window islocated.

Optionally, time intervals between a plurality of candidate positionsincluded in the energy saving signal window are equal; or the candidatepositions in the energy saving signal window are determined according toprior information of an end for transmitting the energy saving signal;or the candidate positions in the energy saving signal window areconfigured on demand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location where the second signalsubset is located and the PDCCH is 0, or the interval between thelocation where the second signal subset is located and the PDCCH doesnot exceed a preset value.

Optionally, if the energy saving signal is detected, blindly detectingthe PDCCH within the activation time of DRX includes: If the firstsignal subset is detected, waking up a receiver of the terminal; If thesecond signal subset is detected, blindly detecting the PDCCH within theactivation time of DRX.

Optionally, the terminal obtains configuration information of the energysaving signal window configured by the network side device in asemi-static, static or dynamic manner.

In a sixth aspect, a network side device, includes: a transceiver, amemory, a processor, and a program stored on the memory and executed bythe processor, wherein the processor is configured to transmit an energysaving signal within an energy saving signal window, so that if theterminal has detected the energy saving signal, a PDCCH is blindlydetected within a target time, wherein a distance between the targettime and a position where the energy saving signal is detected is withina preset time distance range.

Optionally, the target time is an activation time of DRX; the activationtime is configured by the network side device, and the position wherethe energy saving signal is detected is within the activation time; orthe activation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is the activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the processor uses a low-power transmitter to transmit theenergy saving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location where the second signalsubset is located and the PDCCH is 0, or the interval between thelocation where the second signal subset is located and the PDCCH doesnot exceed a preset value.

Optionally, the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static or dynamic manner.

In a seventh aspect, a computer-readable storage medium with a computerprogram stored thereon, wherein the computer program is executed by aprocessor to implement the steps in the PDCCH monitoring method.

In an embodiment of the present disclosure, the terminal detects anenergy saving signal in an energy saving signal window; the terminalblindly detects the PDCCH within a target time if the energy savingsignal is detected, a distance between the target time and a positionwhere the energy saving signal is detected is within a preset timedistance range. In this way, the blind detection of PDCCH is triggeredby the energy saving signal, and power consumption of the terminal isreduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a network structure according to anembodiment of the present disclosure;

FIG. 2 is a flowchart of a PDCCH blind detection method according to anembodiment of the present disclosure;

FIG. 3 is a schematic diagram of a WUS window according to an embodimentof the present disclosure;

FIG. 4 is a schematic diagram of a WUS window provided by anotherembodiment of the present disclosure;

FIG. 5 is a schematic diagram of a WUS window provided by yet anotherembodiment of the present disclosure;

FIG. 6 is a schematic diagram of a WUS window provided by still yetanother embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a WUS window provided by still yetanother embodiment of the present disclosure;

FIG. 8 is a flowchart of a PDCCH blind detection method according toanother embodiment of the present disclosure;

FIG. 9 is a structural diagram of a UE according to an embodiment of thepresent disclosure;

FIG. 10 is a structural diagram of a network side device according to anembodiment of the present disclosure;

FIG. 11 is a structural diagram of a UE according to another embodimentof the present disclosure;

FIG. 12 is a structural diagram of a network side device according toanother embodiment of the present disclosure.

DETAILED DESCRIPTION

In order to make the technical problems, technical solutions andadvantages to be solved by the present disclosure clearer, a detaileddescription will be given below in conjunction with the accompanyingdrawings and specific embodiments.

FIG. 1 is a schematic diagram of a network structure according to anembodiment of the present disclosure. As shown in FIG. 1, it includes aterminal 11 and a network side device 12. The terminal 11 may be a UserEquipment (UE) or other terminals, for example, mobile phones, TabletPersonal Computers, laptop computers, personal digital assistants(PDAs), Mobile Internet Devices (MID) or wearable devices, it should benoted that the specific types of terminals are not limited in theembodiments of the present disclosure. The network side device 12 may bea base station, such as a macro station, LTE eNB, 5G NR NB, etc. Thenetwork side device may also be a small station, such as a low powernode (LPN), pico, femto, etc. The network side device can be an accesspoint (AP); the base station can also be a network node composed of acentral unit (CU) and a plurality of transmission reception points(TRPs) managed and controlled by the CU. It should be noted that thespecific types of network side devices are not limited in theembodiments of the present disclosure.

FIG. 2 is a flowchart of a PDCCH blind detection method according to anembodiment of the present disclosure. As shown in FIG. 2, it includesthe following steps.

201, the terminal detects an energy saving signal in an energy savingsignal window;

202, if the energy saving signal is detected, the terminal blindlydetects the PDCCH within a target time, in which a distance between thetarget time and a position where the energy saving signal is detected iswithin a preset time distance range.

In the embodiments of the present disclosure, the foregoing energysaving signal may be a signal used to activate (or be referred to astrigger) blind detection of the PDCCH, and if the terminal detects theenergy saving signal, the PDCCH is blindly detected within the foregoingactivation time. For example, the energy saving signal may be a wakeupsignal (Wakeup Signal, WUS), so the energy saving signal window may be aWUS window, of course, this is not limited. For example, the energysaving signal may also be other signals defined in the protocol, orother signals agreed in advance by the network side device and theterminal.

The above-mentioned energy saving signal window may be configured by thenetwork side device for the terminal before step 201 is performed, orpre-defined in the protocol, or pre-configured by the terminal, etc.,which is not limited.

In addition, the energy saving signal window may include one or morecandidate positions, and the terminal may detect the energy savingsignal at these candidate positions. It should be noted that, in theembodiments of the present disclosure, the energy saving signal windowmay also be referred to as an energy saving signal transmission window,and the candidate position may also be referred to as a transmissioncandidate position.

The position where the energy saving signal is detected may refer to theposition where the energy saving signal is detected within the energysaving signal window. For example, the energy saving signal windowincludes a plurality of candidate positions, and the terminal detectsthe energy saving signal at one of the candidate positions, so that thecandidate position is the position where the energy saving signal isdetected.

It should be noted that in the embodiments of the present disclosure,the position may refer to a position in the time domain, that is, theposition at which the energy saving signal is detected above may also bereferred to as the time when the energy saving signal is detected.

The foregoing preset time distance range may be configured by thenetwork side for the terminal, or pre-configured by the terminal, orpre-defined in the protocol, such as 0, 10 us, 34 us, 25 us, or 1 OFDMsymbol, etc., which is not limited.

In step 202, if the terminal detects the above-mentioned energy savingsignal, blindly detecting the PDCCH within the target time can beunderstood to mean that if the terminal detects the above-mentionedenergy saving signal, it activates (or is called trigger) the blinddetection of the PDCCH at the above-mentioned target time. In this way,the terminal can blindly detect the PDCCH immediately after detectingthe above-mentioned energy saving signal, or blindly detect the PDCCHafter a time interval of 10 us, 34 us, 25 us, or 1 OFDM symbol.

Through the above steps, it can be realized that the PDCCH is blindlydetected after the energy saving signal is detected, thereby avoidingthe blind detection of the terminal at each activation time, therebysaving the power consumption of the terminal. In addition, since step202 is to blindly detect the PDCCH after the energy saving signal isdetected, the position of the blind PDCCH is flexibly determinedaccording to the position where the energy saving signal is detected.

In addition, in the embodiments of the present disclosure, theabove-mentioned method may be applied to blind detection of PDCCH in anunlicensed frequency band or a licensed frequency band. The state of theabove terminal may be a connected state (RRC_Connected) or anon-connected state, such as an idle state (RRC_IDLE) or an inactivestate (RRC_Inactive).

As an optional implementation, the target time is the activation time ofDRX.

The activation time is configured by the network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

It should be noted that, in the embodiments of the present disclosure,the activation time may refer to the activation time period in the DRXcycle, for example: On duration period (abbreviated as DRX on cycle), ofcourse, the activation time may also be referred to as the wake-up time.

In addition, the network side device may pre-configure a plurality ofactivation times for the terminal, and the activation time in step 202is a plurality of activation times configured by the network sidedevice, including the activation time at the location where the energysaving signal is detected, or the activation time after the positionwhere the energy saving signal is detected, which may specifically referto the activation time closest to the position where the energy savingsignal is detected.

The foregoing detection of the position of the energy saving signalwithin the activation time may mean that the terminal detects the energysaving signal within the activation time, and after detecting the energysaving signal, blindly detects the PDCCH within the activation time. Theabove activation time is the activation time after detecting theposition of the energy saving signal, which may mean that the energysaving signal window is located before a certain activation time. Whenthe terminal detects the energy saving signal in the energy savingsignal window, the blind detection of the PDCCH is performed in theactivation time, where the activation time can be understood as theactivation time closest to the energy saving signal window.

In this implementation, it is possible to prevent the terminal fromblindly detecting the PDCCH at each activation time, thereby saving thepower consumption of the terminal. For example, if the position wherethe energy saving signal is detected is before the above activationtime, the terminal starts blind detection of the PDCCH at the beginningof the activation time, or the position where the energy saving signalis detected is within the activation time, then if the energy savingsignal is detected, the terminal starts blindly detecting the PDCCH.This can further save the power consumption of the terminal, because theterminal can start blind detection from a starting point or non-startingpoint within the activation time.

It should be noted that in the embodiments of the present disclosure,the above target time is not limited to the activation time of DRX. Forexample, in some scenarios, when the network side device does notconfigure the activation time, the above target time may be a timedomain resource whose distance to a position where the energy savingsignal is detected is within a preset time distance range.

As an optional implementation, if the terminal is in the connectedstate, the position where the energy saving signal is detected is withinthe activation time, or the activation time is an activation time afterthe position where the energy saving signal is detected; and/or if theterminal is in a disconnected state, the position where the energysaving signal is detected is within the activation time.

The above and/or can represent any one of the following three ways:

1. If the terminal is in the connected state, the position where theenergy saving signal is detected is within the activation time, or theactivation time is the activation time after the position where theenergy saving signal is detected, but for a non-connection state, it isnot limited.

2. If the terminal is in the non-connected state, the position where theenergy saving signal is detected is within the activation time, and forthe connected state, it is not limited.

3. If the terminal is in a connected state, the position where theenergy saving signal is detected is within the activation time, or theactivation time is the activation time after the position where theenergy saving signal is detected; and if all the terminal is in anon-connected state, the position where the energy saving signal isdetected is within the activation time.

In this way, if the terminal is in the connected state, the energysaving signal can be sent within a certain activation time, so that theterminal starts blind detection of the PDCCH at a non-starting pointposition of the activation time, so as to reduce the time required forthe terminal to perform the blind detection. And if the terminal is inthe connected state, the energy saving signal can be sent before acertain activation time, so that the terminal starts to blindlydetection of the PDCCH at the starting point of the activation time, sothat the terminal in the connected state does not need to blindly detectthe PDCCH during all the activation time.

In addition, in this embodiment, if the terminal is in a disconnectedstate, it can send an energy saving signal during a certain activationtime, so that the terminal starts blind detection of the PDCCH at anon-starting point position of the activation time, so as to reduce thetime for the terminal to perform the blind detection.

It should be noted that the aforementioned non-starting position mayrefer to, when the location where the energy saving signal is detectedis within the activation time, a position that is within the activationtime and whose distance to the position where the energy saving signalis detected is 0 or less than a preset value.

As an optional implementation, the energy saving signal window islocated before the activation time, and the energy saving signal windowincludes one or more candidate positions; or the energy saving signalwindow includes candidate positions located before the activation time,and also includes candidate positions located within the activationtime; or the energy saving signal window is within the activation time,and the energy saving signal window includes one or more candidatepositions.

In this implementation, it is possible to configure the energy savingsignal window before the activation time, so that after the energysaving signal is detected, the PDCCH blind detection can be performed atthe activation time.

For example, the WUS window is configured by the network side deviceperiodically, the WUS window is located before the DRX duration period(abbreviated as DRX on period), as shown in FIG. 3, on represents theDRX on period in the DRX cycle, off represents the opportunity for DRXcycle (abbreviated as DRX off cycle). The WUS window configured by thenetwork side device is before the DRX on period, and the number ofcandidate positions for sending WUS in the WUS window is 1. In this way,the terminal detects WUS in each WUS window, and only blindly detectsthe PDCCH in the DRX on period after WUS is detected, so the powerconsumption of the terminal is greatly reduced. Optionally, in theembodiment of the present disclosure, the PDCCH may be a PDCCH scrambledby a Cell Radio Network Temporary Identifier (C-RNTI), of course, thisis not limited.

In addition, in the above embodiment, it can also be realized that theenergy saving signal window includes candidate positions located beforethe activation time, and also includes candidate positions within theactivation time, that is, the energy saving signal window spans thestarting point of the activation time, so that the terminal startblindly detecting PDCCH at the starting position or the non-startingposition of the activation time to further save the power consumption ofthe terminal.

For example, as shown in FIG. 4, the network side device periodicallyconfigures the WUS window, the WUS window spans the starting point ofthe DRX on period, and the number of candidate positions for sending WUSin the WUS window is more than one. The terminal detects WUS at theplurality of candidate positions in the WUS window. The dotted rectangleindicates the candidate position but no WUS is sent. After the terminaldetects the real WUS, it triggers PDCCH detection. In this way, it canbe realized that the time when the data arrives is any time in the DRXon cycle, and the power consumption is reduced more obviously.

In addition, in the foregoing implementation, it is also possible torealize that the energy saving signal window is within the activationtime. In this way, blind detection of PDCCH can be started at thenon-starting position in the activation time. Because in practicalapplications, the time when the data arrives is not necessarily thestarting point of the activation time. Therefore, the time for theterminal to perform blind detection is further reduced, the powerconsumption of the terminal is further saved.

For example, as shown in FIG. 5, the network side device periodicallyconfigures the WUS window, the WUS window is located within the DRX onperiod, and the number of candidate positions for sending WUS in the WUSwindow is more than one. In this way, the terminal detects WUS at aplurality of candidate positions in the WUS window. The dotted rectangleindicates the candidate position but no WUS is sent. After the terminaldetects the real WUS, it triggers PDCCH detection. Since the time whenthe data arrives is not necessarily the starting point of the DRX onperiod, the time for the terminal to blindly detect the PDCCH issometimes much less, and the power consumption is significantly reduced.

As an optional implementation, the terminal uses a low-power receiver todetect the energy saving signal at a candidate position of the energysaving signal; or the terminal adopts a passive receiver to detect theenergy saving signal, in which the position for detecting the energysaving signal at least includes a position where the energy savingsignal window is located.

The aforementioned low-power receiver may be a radio frequency circuitdifferent from the receiving data channel, and the low-power receiverhas a lower power consumption than the receiver receiving the datachannel.

For example, for the NR scenario in the authorized frequency band with along coverage requirement, a radio frequency circuit working in a lowerfrequency band can be used to send and receive the energy saving signal.Of course, data and the energy saving signal may be sent and received atthe same frequency, but with different RF channels. At this time, theenergy saving signal receiving circuit omits high-power parts comparedwith the data receiving circuit, such as a low-noise amplifier and aphase-locked loop and other high-power devices, a low-power energysaving signal receiver is realized to further reduce power consumption.

The above-mentioned passive receiver may mean that the receiver does notneed power when detecting the energy saving signal. For example, thepassive receiving circuit detects the energy saving signal, and thepassive circuit adopts the power of a transmitted signal to detect theenergy saving signal and wake up the receiver. The terminal does notneed to consume power, so it can receive the energy saving signal well.This solution can be applied to an energy saving scenarios in theunlicensed frequency band with a typical coverage range (for example, acoverage range of 100 meters). In addition, the passive receiver is usedto detect the energy saving signal means that the terminal adopts thepassive receiver to detect energy saving all the time. Since the passiveenergy detection receiver does not need to consume power, the powerconsumption of the terminal can be further reduced.

As an optional implementation, the time intervals between a plurality ofcandidate positions included in the energy saving signal window areequal; or the candidate positions in the energy saving signal window aredetermined according to priori information of a sending end of theenergy saving signal; or the candidate positions in the energy savingsignal window are configured on-demand.

For example, the network side device may configure an energy savingsignal window according to the DRX transmission period, the candidateposition of the energy saving signal may be located within the DRX onperiod, and the number of candidate positions for sending the energysaving signal in the energy saving signal window is one or more.

The time interval between the plurality of candidate positions includedin the energy saving signal window may be equal, that means theplurality of candidate positions in the energy saving signal window arearranged at equal time intervals. Of course, the embodiment of thepresent disclosure does not limit this. For example, unequal timeintervals may also be configured.

The foregoing determination based on the priori information of thesending end of the energy saving signal may be that the sending end ofthe energy saving signal (for example, a network side device) determinesthe candidate position in the energy saving signal window according tothe prior information. For example, the possible starting point for datatransmission in unlicensed frequency band can be determined in advance.When there is a definite correspondence between the starting point ofthe DRX on period and a sub-frame boundary, the candidate position ofeach energy saving signal can be determined in advance according to theprior information of the possible starting point for data transmissionin unlicensed frequency band. Of course, the foregoing prioriinformation is not limited to the priori information of the possiblestarting point for data transmission in the unlicensed frequency band,for example, it can also be the prior information of the possiblestarting point for data transmission in the licensed frequency band, orthe a priori information of the possible transmission interval, etc.

In this embodiment, since the candidate position of the energy savingsignal is determined by the priori information, the candidate positioncan be closer to the starting point of data transmission, so that theterminal need to blindly detect in fewer position and the purpose offurther saving power consumption of the terminal is achieved.

The candidate positions in the above energy saving signal window areconfigured on demand. The candidate positions are determined accordingto actual needs, so that the candidate positions can be closer to actualpositions for data transmission, so that the terminal needs to blindlydetect in fewer positions, the purpose of further saving powerconsumption of the terminal is achieved.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, the interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

The above-mentioned preset value may be pre-defined in the protocol orpre-configured by the network side device. For example, the preset valuecan be 34 us or 25 us or 1 OFDM symbol. The foregoing candidate positionfor transmitting the energy saving signal is also the position where theenergy saving signal is detected in step 202, because when the energysaving signal is transmitted at the candidate position, the terminalwill detect the energy saving signal at the candidate position.

In this implementation, since the interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value, whichenables the terminal to detect the PDCCH immediately after triggeringthe blind detection of the PDCCH, thereby further saving the powerconsumption of the terminal. It should be noted that in thisimplementation, one or more candidate positions may be included in theenergy saving signal window.

For example, in the WUS window, the candidate positions are configuredin an on-demand manner, and the WUS is sent by choosing a position wherethe gap between the position and the PDCCH of the terminal is 0 or doesnot exceed a certain preset value. As long as the terminal has detectedthe WUS, it immediately enters the step of detecting the receipt ofPDCCH. This feature is particularly suitable for unlicensed frequencybands and completely avoids too much blind detection of PDCCHs, as shownin FIG. 6. Of course, for licensed frequency bands, this solution canalso achieve the lowest power consumption overhead. In this solution,actually there is only one transmission position in the WUS sendingwindow. The terminal needs to detect the WUS window defined as the WUSsending window. The terminal always detects the WUS in the WUS window.In addition, the terminal can adopt a radio frequency circuit that isdifferent from the receiving data channel to receive WUS. For example,in the NR scenario of an authorized frequency band with a long coveragerequirement, a radio frequency circuit working in a lower frequency bandcan be used to specifically send and receive the WUS signal. Of course,the data and the WUS may be sent and received at the same frequency, butdifferent RF channels are used. At this time, the WUS receiving circuitomits high power consumption parts, such as a low noise amplifier, aphase-locked loop, etc, as compared with the data receiving circuit. Alow power consumption WUS receiver is achieved. Of course, the terminalcan also use a passive energy detection receiver to always detect theWUS. The passive energy detection receiver means that the receiver doesnot need power when detecting the WUS signal, such as detecting the WUSsignal through a passive receiving circuit. The passive circuit detectsthe WUS by using the power of the transmitted signal and wakes up thereceiver. Since the terminal does not consume power, it can receive theWUS well. This solution is suitable for energy saving in unlicensedfrequency bands with a typical coverage of 100 meters.

As an optional implementation, the energy saving signal includes a firstsignal subset and a second signal subset, and the first signal subset islocated before the second signal subset.

The first signal subset may be one or more symbols. Similarly, thesecond signal subset may also be one or more symbols. In addition, itshould be noted that the foregoing first signal subset and second signalsubset may be referred to as two subsets of one energy saving signal,and of course, they may also be referred to as two different energysaving signals. In addition, the first signal subset may be sent througha candidate position in the energy saving signal window, and the secondsignal subset may not be sent at a candidate position in the energysaving signal window, but is sent at a non-candidate position closest tothe PDCCH within the energy saving signal window. Of course, the secondsignal subset may also be sent at a certain candidate position withinthe energy saving signal window.

In this embodiment, since the first signal subset and the second signalsubset are used to trigger the blind detection of the PDCCH by theterminal, it is possible to wake up the terminal through one signalsubset, and trigger the blind detection of the PDCCH by the terminalthrough another signal subset. Thus, the power consumption of theterminal can be further saved. For example, if the above energy savingsignal is detected, the terminal blindly detects the PDCCH within theDRX activation time, which may include: if the first signal subset isdetected, the terminal wakes up the receiver of the terminal; if thesecond signal subset is detected, the terminal blindly detects the PDCCHwithin the activation time of DRX.

The process of waking up the receiver of the terminal occurs at aclimbing phase of the transmission power of the terminal, and then thesecond signal subset is detected at all positions within the energysaving signal window, and when the second signal subset is detected, theblind detection of PDCCH is started.

Optionally, the interval between the location of the second signalsubset and the PDCCH is 0, or the interval between the location of thesecond signal subset and the PDCCH does not exceed a preset value.

Since the interval between the location of the second signal subset andthe PDCCH is 0 or does not exceed the preset value, the time requiredfor the terminal to blindly detect the PDCCH is further reduced, so asto further save the power consumption of the terminal.

Optionally, the receiving complexity of the first signal subset ishigher than the receiving complexity of the second signal subset. Inthis way, because the reception complexity (or detection complexity) ofthe second signal subset is relatively low, it is possible to blindlydetect the PDCCH immediately after the second signal subset is detected,which can further reduce the number of positions where the terminalneeds to blindly detect the PDCCH.

For example, the PDCCH blind detection method shown in FIG. 7 is thebest power saving method. In this embodiment, compared with theon-demand method described above for sending WUS, this embodiment canreduce the changes to the standard. For example, the network side deviceconfigures the WUS window according to the DRX transmission cycle, andthe candidate position for sending WUS in the WUS window is determined.If the base station can know in advance that the data is about to betransmitted, a signal subset of WUS signals (abbreviated as a subset)can be sent at a certain candidate location, and then another subset ofWUS signals can be sent before the PDCCH, and finally another subset ofthe WUS is sent at a position whose distance to the PDCCH is 0 or doesnot exceed a certain preset value, as shown in FIG. 7. The network sidedevice sends WUS subset 1 at a certain WUS candidate location before thedata arrives. The sending location is preferably as far back as possiblein the WUS window. Of course, the candidate location can also be locatedbefore the duration period, and the reception complexity of WUS subset 1is significantly greater than that of WUS subset 2. The network sidedevice sends WUS subset 2 at a position whose distance to the PDCCH is 0or that is very close to the PDCCH, and WUS subset 2 is not necessarilytransmitted at the original predefined WUS candidate position, but thereception complexity of WUS subset 2 is very low. The terminal candetect WUS subset 2 at all positions in the WUS window after receivingWUS subset 1. Since the position for transmitting WUS subset 1 can bethe last allowed candidate position, the time left for WUS subset 2 toalways be detected is already very short. However, the detectioncomplexity of WUS subset 2 is relatively low, which can further reducereception power consumption of the terminal.

Optionally, in the embodiment of the present disclosure, the terminalobtains the configuration information of the energy saving signal windowconfigured by the network side device in a semi-static, static, ordynamic manner.

The above configuration information may refer to information related tothe configuration of the energy saving signal window, such as part orall of the information such as the size and position of the window andthe number of candidate sending positions.

For example, the network side device can configure information relatedto energy saving signal window for the terminal with semi-static,static, or dynamic manner, such as part or all of the information suchas the size and position of the window and the number of candidatesending positions. A preferred way is that the network side devicenotifies the configuration information of the energy saving signalwindow through system information.

In the embodiment of the present disclosure, the terminal detects theenergy saving signal within the energy saving signal window; if theenergy saving signal is detected, the terminal blindly detects the PDCCHwithin the activation time of discontinuous reception of DRX. Theactivation time is configured by the network side device and theposition where the energy saving signal is detected is within theactivation time; or the activation time is configured by the networkside device and is the activation time after the position where theenergy saving signal is detected. In this way, the blind detection ofthe PDCCH can be triggered by the energy saving signal, thereby reducingthe power consumption of the terminal.

FIG. 8 is a flowchart of a PDCCH monitoring method provided by anembodiment of the present disclosure. As shown in FIG. 8, it includesthe following steps.

801, the network side device sends an energy saving signal within anenergy saving signal window, so that if the terminal detects the energysaving signal, it blindly detects the PDCCH within a target time, inwhich a distance between the target time and a location where the energysaving signal is detected is within a preset time distance range.

Optionally, the target time is an activation time of DRX.

The activation time is configured by a network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is an activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and alsoincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the network side device uses a low-power transmitter to sendthe energy saving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location of the second signal subsetand the PDCCH is 0, or the interval between the location of the secondsignal subset and the PDCCH does not exceed a preset value.

Optionally, the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static, or dynamic manner.

It should be noted that this embodiment is used as an implementation ofthe network side device corresponding to the embodiment shown in FIG. 2.For specific implementation, the related description of the embodimentshown in FIG. 2 may be referred. In order to avoid repetitivedescription, this embodiment will not be repeated, and the samebeneficial effects can be achieved.

FIG. 9 is a structural diagram of a terminal according to an embodimentof the present disclosure. As shown in FIG. 9, a terminal 900 includes:a detection module 901, configured to detect an energy saving signal ina wake-up signal energy saving signal window; a blind detection module902, configured to blindly detect the PDCCH within a target time if theenergy saving signal is detected, wherein a distance between the targettime and a position where the energy saving signal is detected is withina preset time distance range.

Optionally, the target time is an activation time of DRX.

The activation time is configured by a network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is an activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and alsoincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the network side device uses a low-power transmitter to sendthe energy saving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location of the second signal subsetand the PDCCH is 0, or the interval between the location of the secondsignal subset and the PDCCH does not exceed a preset value.

Optionally, the blind detection module 902 is configured to wake up areceiver of the terminal if the first signal subset is detected; and ifthe second signal subset is detected, the PDCCH is blindly detected inthe activation time of DRX.

Optionally, the terminal obtains configuration information of the energysaving signal window configured by the network side device in asemi-static, static or dynamic manner.

It should be noted that the above-mentioned terminal 900 in thisembodiment may be a terminal of any implementation in the methodembodiment of the present disclosure. Any implementation of the terminalin the method embodiment of the disclosure may be used by the terminalin this embodiment. The terminal 900 may implement and achieve the samebeneficial effects, which will not be repeated here.

FIG. 10 is a structural diagram of a network side device according to anembodiment of the present disclosure. As shown in FIG. 10, the networkside device 1000 includes: a sending module 1001, configured to send anenergy saving signal within an energy saving signal window, so that ifthe terminal has detected the energy saving signal, it will blindlydetect the PDCCH within a target time, in which a distance between thetarget time and the position where the energy saving signal is detectedis within a preset time distance range.

Optionally, the target time is an activation time of DRX.

The activation time is configured by a network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is an activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and alsoincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the network side device uses a low-power transmitter to sendthe energy saving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location of the second signal subsetand the PDCCH is 0, or the interval between the location of the secondsignal subset and the PDCCH does not exceed a preset value.

Optionally, the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static, or dynamic manner.

It should be noted that the above-mentioned network side device 1200 inthis embodiment may be a network side device in any implementation inthe method embodiments of the present disclosure, and any implementationof the network side device in the method embodiments of the disclosurecan be implemented by the above-mentioned network side device 1200 inthis embodiment and achieve the same beneficial effect, which will notbe repeated here.

FIG. 11 is a structural diagram of another terminal according to anembodiment of the present disclosure. As shown in FIG. 11, the terminalincludes: a transceiver 1110, a memory 1120, a processor 1100, and aprogram stored in the memory 1120 and executed on the processor 1200.

The processor is configured to detect an energy saving signal in awake-up signal energy saving signal window; and if the energy savingsignal is detected, the PDCCH is blindly detected within a target time,wherein a distance between the target time and a position where theenergy saving signal is detected is within a preset time distance range.

The transceiver 1110 may be used to receive and send data under thecontrol of the processor 1100.

In FIG. 11, the bus architecture may include any number ofinterconnected buses and bridges. Specifically, various circuits of oneor more processors represented by the processor 1100 and the memoryrepresented by the memory 1120 are linked together. The bus architecturecan also link various other circuits such as peripheral devices, voltageregulators, power management circuits, etc., which are all known in theart, and therefore, no further descriptions are provided herein. The businterface provides the interface. The transceiver 1110 may be aplurality of elements, including a transmitter and a receiver, andprovide a unit for communicating with various other devices on thetransmission medium.

The processor 1100 is responsible for managing the bus architecture andgeneral processing, and the memory 1120 may store data used by theprocessor 1100 when performing operations.

It should be noted that the memory 1120 is not limited to only being onthe terminal, and the memory 1120 and the processor 1100 may beseparated in different geographic locations.

Optionally, the target time is an activation time of DRX.

The activation time is configured by a network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is an activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and alsoincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the transceiver adopts a low-power receiver to detect theenergy saving signal at a candidate position of the energy savingsignal; or the transceiver adopts a passive receiver to detect theenergy saving signal, wherein the position where the energy savingsignal is detected at least includes a position of the energy savingsignal window.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location of the second signal subsetand the PDCCH is 0, or the interval between the location of the secondsignal subset and the PDCCH does not exceed a preset value.

Optionally, if the energy saving signal is detected, blindly detectingthe PDCCH within the activation time of DRX includes: if the firstsignal subset is detected, waking up a receiver of the terminal; if thesecond signal subset is detected, blindly detecting the PDCCH within theactivation time of DRX.

Optionally, the terminal obtains configuration information of the energysaving signal window configured by the network side device in asemi-static, static or dynamic manner.

It should be noted that the above-mentioned terminal in this embodimentmay be a terminal in any implementation in the method embodiment of thepresent disclosure, and any implementation of the terminal in the methodembodiment of the disclosure may be implemented by the terminal, thesame beneficial effects can be achieved, which will not be repeatedhere.

FIG. 12 is a structural diagram of another network side device accordingto an embodiment of the present disclosure. As shown in FIG. 12, thenetwork side device includes a transceiver 1210, a memory 1220, aprocessor 1200, and a program stored on the memory 1220 and executed bythe processor.

The memory 1220 is configured to send an energy saving signal within anenergy saving signal window, so that if the terminal has detected theenergy saving signal, it will blindly detect the PDCCH within a targettime, in which a distance between the target time and a position wherethe energy saving signal is detected is within a preset time distancerange.

The transceiver 1210 may be used to receive and send data under thecontrol of the processor 1200.

In FIG. 12, the bus architecture may include any number ofinterconnected buses and bridges. Specifically, various circuits of oneor more processors represented by the processor 1200 and the memoryrepresented by the memory 1220 are linked together. The bus architecturecan also link various other circuits such as peripheral devices, voltageregulators, power management circuits, etc., which are all known in theart, and therefore, no further descriptions are provided herein. The businterface provides the interface. The transceiver 1210 may be aplurality of elements, that is, includes a transmitter and a receiver,and provides a unit for communicating with various other devices on thetransmission medium.

The processor 1200 is responsible for managing the bus architecture andgeneral processing, and the memory 1220 can store data used by theprocessor 1200 when performing operations.

It should be noted that the memory 1220 is not limited to only being onthe network side device, and the memory 1220 and the processor 1200 maybe separated in different geographic locations.

Optionally, the target time is an activation time of DRX.

The activation time is configured by a network side device, and theposition where the energy saving signal is detected is within theactivation time; or the activation time is an activation time after theposition where the energy saving signal is detected among a plurality ofactivation times configured by the network side device.

Optionally, if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is an activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.

Optionally, the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and alsoincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.

Optionally, the memory uses a low-power transmitter to send the energysaving signal.

Optionally, the time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of the network side device; or thecandidate positions in the energy saving signal window are configured ondemand.

Optionally, if the candidate positions in the energy saving signalwindow are configured on demand, an interval between the candidateposition for transmitting the energy saving signal and the PDCCH is 0,or the interval between the candidate position for transmitting theenergy saving signal and the PDCCH does not exceed a preset value.

Optionally, the energy saving signal includes a first signal subset anda second signal subset, and the first signal subset is located beforethe second signal subset.

Optionally, an interval between a location of the second signal subsetand the PDCCH is 0, or the interval between the location of the secondsignal subset and the PDCCH does not exceed a preset value.

Optionally, the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static, or dynamic manner.

It should be noted that the above-mentioned network side device in thisembodiment may be a network side device in any implementation in themethod embodiment of the present disclosure, and any implementation ofthe network side device in the method embodiment of the disclosure maybe implemented by the above-mentioned network side device in thisembodiment and achieves the same beneficial effects, which will not berepeated here.

The embodiment of the present disclosure also provides acomputer-readable storage medium on which a computer program is stored,where the program is executed by a processor to implement the steps inthe PDCCH monitoring method on the terminal side provided by theembodiment of the present disclosure, or the steps in the PDCCHmonitoring method on the network side device side provided in theembodiments of the present disclosure.

In the several embodiments provided in this disclosure, it should beunderstood that the disclosed method and device can be implemented inother ways. For example, the device embodiments described above aremerely illustrative. For example, the division of the units is only alogical function division, and there may be other divisions in actualimplementation, for example, a plurality of units or components may becombined or can be integrated into another system, or some features canbe ignored or not implemented. In addition, the discussed mutualcoupling or direct coupling or communication connection may be indirectcoupling or communication connection through some interfaces, devices orunits, and may be in electrical, mechanical or other forms.

In addition, the functional units in the various embodiments of thepresent disclosure may be integrated into one processing unit, or eachunit may be separately physically included, or two or more units may beintegrated into one unit. The above-mentioned integrated unit can berealized in the form of hardware, or in the form of hardware andsoftware functional unit.

The aforementioned integrated unit implemented in the form of a softwarefunctional unit may be stored in a computer readable storage medium. Theabove-mentioned software functional unit is stored in a storage mediumand includes several instructions to make a computer device (which maybe a personal computer, a server, or a network device, etc.) to executea part of steps of the information data block processing methoddescribed in the various embodiments of the present disclosure. Theaforementioned storage media include: a U disk, a mobile hard disk, aread-only memory (ROM), a random access memory (RAM), a magnetic disk oran optical disk, etc., which can store program code.

The above embodiments are for illustrative purposes only, but thepresent disclosure is not limited thereto. Obviously, a person skilledin the art may make further modifications and improvements withoutdeparting from the spirit of the present disclosure, and thesemodifications and improvements shall also fall within the scope of thepresent disclosure.

What is claimed is:
 1. A Physical Downlink Control Channel (PDCCH) blinddetection method, comprising: detecting, by a terminal, an energy savingsignal in an energy saving signal window; blindly detecting, by theterminal, the PDCCH within a target time if the energy saving signal isdetected, wherein a distance between the target time and a positionwhere the energy saving signal is detected is within a preset timedistance range, wherein, the target time is an activation time ofDiscontinuous Reception (DRX); the activation time is configured by anetwork side device, and the position where the energy saving signal isdetected is within the activation time; or the activation time is anactivation time after the position where the energy saving signal isdetected among a plurality of activation times configured by the networkside device.
 2. The method according to claim 1, wherein if the terminalis in a connected state, the position where the energy saving signal isdetected is within the activation time, or the activation time is theactivation time after the position where the energy saving signal isdetected; and/or if the terminal is in a disconnected state, theposition where the energy saving signal is detected is within theactivation time.
 3. The method according to claim 1, wherein the energysaving signal window is located before the activation time, and theenergy saving signal window includes one or more candidate positions; orthe energy saving signal window includes candidate positions locatedbefore the activation time, and further includes candidate positionslocated within the activation time; or the energy saving signal windowis within the activation time, and the energy saving signal windowincludes one or more candidate positions.
 4. The method according toclaim 1, wherein time intervals between a plurality of candidatepositions included in the energy saving signal window are equal; or thecandidate positions in the energy saving signal window are determinedaccording to prior information of an end for transmitting the energysaving signal; or the candidate positions in the energy saving signalwindow are configured on demand.
 5. The method according to claim 4,wherein if the candidate positions in the energy saving signal windoware configured on demand, an interval between the candidate position fortransmitting the energy saving signal and the PDCCH is 0, or theinterval between the candidate position for transmitting the energysaving signal and the PDCCH does not exceed a preset value.
 6. Themethod according to claim 1, wherein the energy saving signal includes afirst signal subset and a second signal subset, and the first signalsubset is located before the second signal subset.
 7. The methodaccording to claim 6, wherein an interval between a location where thesecond signal subset is located and the PDCCH is 0, or the intervalbetween the location where the second signal subset is located and thePDCCH does not exceed a preset value.
 8. The method according to claim6, wherein, if the energy saving signal is detected, blindly detecting,by the terminal, the PDCCH within the activation time of DRX,comprising: if the first signal subset is detected, waking up, by theterminal, a receiver of the terminal; if the second signal subset isdetected, blindly detecting, by the terminal, the PDCCH within theactivation time of DRX.
 9. A PDCCH monitoring method, comprising:transmitting, by a network side device, an energy saving signal withinan energy saving signal window, so that if the terminal has detected theenergy saving signal, a PDCCH is blindly detected within a target time,wherein a distance between the target time and a position where theenergy saving signal is detected is within a preset time distance range,wherein the target time is an activation time of DRX; the activationtime is configured by the network side device, and the position wherethe energy saving signal is detected is within the activation time; orthe activation time is an activation time after the position where theenergy saving signal is detected among a plurality of activation timesconfigured by the network side device.
 10. The method according to claim9, wherein if the terminal is in a connected state, the position wherethe energy saving signal is detected is within the activation time, orthe activation time is the activation time after the position where theenergy saving signal is detected; and/or if the terminal is in adisconnected state, the position where the energy saving signal isdetected is within the activation time.
 11. The method according toclaim 9, wherein the energy saving signal window is located before theactivation time, and the energy saving signal window includes one ormore candidate positions; or the energy saving signal window includescandidate positions located before the activation time, and furtherincludes candidate positions located within the activation time; or theenergy saving signal window is within the activation time, and theenergy saving signal window includes one or more candidate positions.12. The method according to claim 9, wherein the time intervals betweena plurality of candidate positions included in the energy saving signalwindow are equal; or the candidate positions in the energy saving signalwindow are determined according to prior information of the network sidedevice; or the candidate positions in the energy saving signal windoware configured on demand.
 13. The method according to claim 12, whereinif the candidate positions in the energy saving signal window areconfigured on demand, an interval between the candidate position fortransmitting the energy saving signal and the PDCCH is 0, or theinterval between the candidate position for transmitting the energysaving signal and the PDCCH does not exceed a preset value.
 14. Themethod according to claim 9, wherein the energy saving signal includes afirst signal subset and a second signal subset, and the first signalsubset is located before the second signal subset.
 15. The methodaccording to claim 14, wherein an interval between a location where thesecond signal subset is located and the PDCCH is 0, or the intervalbetween the location where the second signal subset is located and thePDCCH does not exceed a preset value.
 16. The method according to claim9, wherein the network side device configures configuration informationof the energy saving signal window for the terminal in a semi-static,static or dynamic manner.
 17. A terminal, comprising: a transceiver, amemory, a processor, and a program stored in the memory and executed bythe processor, wherein: the processor is configured to detect an energysaving signal in an energy saving signal window; and if the energysaving signal is detected, the PDCCH is blindly detected within a targettime, wherein a distance between the target time and a position wherethe energy saving signal is detected is within a preset time distancerange, wherein, the target time is an activation time of DiscontinuousReception (DRX); the activation time is configured by a network sidedevice, and the position where the energy saving signal is detected iswithin the activation time; or the activation time is an activation timeafter the position where the energy saving signal is detected among aplurality of activation times configured by the network side device. 18.A network side device, comprising: a transceiver, a memory, a processor,and a program stored on the memory and executed by the processor,wherein: the processor is configured to implement the PDCCH monitoringmethod according to claim 9.